/*
* Copyright (C) 2011 The Guava Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.common.util.concurrent;
import static com.google.common.truth.Truth.assertThat;
import com.google.common.collect.ImmutableList;
import java.util.List;
import java.util.concurrent.Callable;
import java.util.concurrent.TimeUnit;
import junit.framework.TestCase;
/**
* Tests for {@link AbstractListeningExecutorService}.
*
* @author Colin Decker
*/
public class AbstractListeningExecutorServiceTest extends TestCase {
public void testSubmit() throws Exception {
/*
* Mostly just tests that TrustedListenableFutureTask are created and run; tests for
* TrustedListenableFutureTask should ensure that listeners are called correctly.
*/
TestListeningExecutorService e = new TestListeningExecutorService();
TestRunnable runnable = new TestRunnable();
ListenableFuture<?> runnableFuture = e.submit(runnable);
assertThat(runnableFuture).isInstanceOf(TrustedListenableFutureTask.class);
assertTrue(runnableFuture.isDone());
assertTrue(runnable.run);
ListenableFuture<String> callableFuture = e.submit(new TestCallable());
assertThat(callableFuture).isInstanceOf(TrustedListenableFutureTask.class);
assertTrue(callableFuture.isDone());
assertEquals("foo", callableFuture.get());
TestRunnable runnable2 = new TestRunnable();
ListenableFuture<Integer> runnableFuture2 = e.submit(runnable2, 3);
assertThat(runnableFuture2).isInstanceOf(TrustedListenableFutureTask.class);
assertTrue(runnableFuture2.isDone());
assertTrue(runnable2.run);
assertEquals((Integer) 3, runnableFuture2.get());
}
private static class TestRunnable implements Runnable {
boolean run = false;
@Override
public void run() {
run = true;
}
}
private static class TestCallable implements Callable<String> {
@Override
public String call() {
return "foo";
}
}
/**
* Simple same thread listening executor service that doesn't handle shutdown.
*/
private static class TestListeningExecutorService extends AbstractListeningExecutorService {
@Override
public void execute(Runnable runnable) {
assertThat(runnable).isInstanceOf(TrustedListenableFutureTask.class);
runnable.run();
}
@Override
public void shutdown() {
}
@Override
public List<Runnable> shutdownNow() {
return ImmutableList.of();
}
@Override
public boolean isShutdown() {
return false;
}
@Override
public boolean isTerminated() {
return false;
}
@Override
public boolean awaitTermination(long timeout, TimeUnit unit) {
return false;
}
}
}